Joseph v



(No Model.) J. V. NICHOLS & L. H. LATIMER.

ELECTRIC LAMP.

' No. 247,097. Patented $ept. 13,1881.

ii ,2. A 752/ W/iizzesscs. f/zrwziors. g V. map-e0 J4, 44 6, M1.- W42UNITED STATES PATENT OF ICE.

JOSEPH v. NICHOLS, OF BROOKLYN, AND LEWIS H. LATIMER, OF NEW YORK, N. Y.

ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent N 0. 247,097, datedSeptember 13, 1881 Application filed April 18, 1881. (N model.)

To all whom it may concern:

Be it known that we, JOSEPH V. NICHOLS, a resident of Brooklyn, in thecounty of Kings and State of New York, and LEWIS H. LAT- IMER, of thecity, county, and State of New York, haveinvented certain new and usefulImprovements in Incandescent Electric Lamps, of

' ed to the metallic conducting-wires of an incandescent lamp by ourimproved method; Fig. 2, a View of the same turned edgewise; and Fig. 3,aperspective of the same, illustrating more in detail the connections.

Arepresents a carbon conducting-strip, made, in the usual manner, withwidened ends B B. The strip is, by preference, prepared by carbonizing ablank cut from sheets of paper, the form of the blanks beingapproximately that of the finished carbon. This method is not essential,however, as others may be employed in the preparation of the carbons,asby bending and twisting straight strips of wood or pa per either beforeor after carbonization.

Through the ends B B square or rectangular perforations O are out beforecarbonization, and through these perforations the flattened ends of thewires or conductorsDDare passed and bent over by pinchers to firmlyclamp the carbon. In order to secure a more perfect electrical contactbetween the carbons and the wires, the ends of the former may bepreviously coated with copper or platinum. With this form of clamp allnuts, screws, or pinsand similar accessories are dispensed with. Theconductors make contact with the carbons at considerable distance fromthe incandescent portion, so that the permanency of the connections isinsured, and as the wires. are by this means protected in great measurefrom the heat developed, they may be of copper, whereby the cost of thelamps is greatly reduced. The wires are flattened for a short distancefrom their ends for securing greater contactsurface and flexibility, andare brought together and sealed into a support of vitreous materialsol-mounting the base E of the ordinary incandescent lamp.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is- 1 1. The combination, in anincandescentlamp, with'the perforated ends of a carbon conducting-strip,of metallic wires passing through the same and bent over into closecontact with the carbon, as described.

2. The combination, with the carbon conducting-strip A, having widenedportions B B and rectangular perforations (J O, of conducting-wires D D,with flattened ends passing through the perforations and bent over intoclose union with the carbon, as and for the purpose set forth.

In testimony whereof we have hereunto affixed our signatures in thepresence of two subscribing witnesses.

JOSEPH V. NICHOLS. L. H. LATIMER. Witnesses:

WM. H. TUCKER, DAVID LAW.

